Re: Boot loop TP-Link Archer C9 v1 (Europe)
It was never a firmware or a memory issue. The problem was due to the current draw of the wireless chip at boot.
The power supply is rated at 9V with 0.6A, but during the router startup the current reached 0.8A, the voltage of the power supply dropped well below 9V (aprox 3.5V).
I’ve managed to boot up the router and upgrade with the latest firmware using a lab power supply.
Next steps:
-modify the WAN MAC address with the one on the label
-open the TP-Link power supply to see some...
metalrise
New Member
Last Activity: 02-25-2023, 04:24 PM
Joined: 07-02-2010
Location: Bucharest
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Last edited by metalrise; 09-17-2018, 04:46 PM. -
Re: Boot loop TP-Link Archer C9 v1 (Europe)
[code]
wl1: wlc_iovar_op: BCME -20 (Bad Channel)
wl1: wlc_ampdu_tx_set: AGG Mode = MAC+AQM txmaxpkts 1024
wl1: wlc_enable_probe_req: state down, deferring setting of host flags
acsd: scan in progress ...
acsd: scan in progress ...
acsd: scan in progress ...
acsd: scan in progress ...
acsd: scan in progress ...
...Leave a comment:
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Re: Boot loop TP-Link Archer C9 v1 (Europe)
[code]
Device eth0: hwaddr 00-90-4C-11-20-01, ipaddr 192.168.1.1, mask 255.255.255.0
gateway not set, nameserver not set
Loader:raw Filesys:raw Dev:flash0.os File: Options
null)
Loading: .... 4232512 bytes read
Entry at 0x00008000
Closing network.
Starting program at 0x00008000
console [ttyS0] enabled, bootconsole disabled
serial8250.0: ttyS1 at MMIO 0x18000400 (irq = 117) is a 16550
brd: module loaded
loop: module loaded
pflash: found no supported devices...Leave a comment:
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Re: Boot loop TP-Link Archer C9 v1 (Europe)
Serial boot log
[code]
Digital core power voltage set to 1.0V
Decompressing...done
CFE version 6.37.14.93 (r469350) based on BBP 1.0.37 for BCM947XX (32bit,SP,)
Build Date: Wed Nov 4 09:11:46 CST 2015 (root@jji315)
Copyright (C) 2000-2008 Broadcom Corporation.
Init Arena
Init Devs.
Boot partition size = 262144(0x40000)
DDR Clock: 400 MHz
Info: DDR frequency set from clkfreq=1000,*800*
Warning: invalid DDR setting of 800 MHz ignored....Leave a comment:
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Re: Boot loop TP-Link Archer C9 v1 (Europe)
Managed to hook up the serial console and erased the nvram
[code]
CFE> nvram erase
*** command status = 0
[/code]Code:Re: Boot loop TP-Link Archer C9 v1 (Europe) Managed to hook up the serial console and erased the nvram [code] CFE> nvram erase *** command status = 0 [/code]
Leave a comment:
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Re: Boot loop TP-Link Archer C9 v1 (Europe)
How?
With the original firmware uploaded via tftpd or with ch341a, the router its stuck in the boot loop.
For every attempt I've tried to hold hold the reset button to clear the settings.Leave a comment:
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Boot loop TP-Link Archer C9 v1 (Europe)
Boot loop TP-Link Archer C9 v1 (Europe)
Hello,
I have a TP-Link Archer C9 v1 that is stuck in a boot loop after beeing unplug for 2 weeks. The symptom is: the power LED is blinking, after a few seconds all the leds are on, afterwards the all the led are off and power LED is again blinking.
What I tried with no success:
1) UNBRICK/Recovery TP-Link Archer C9 WIFI Router Without A Serial Connection How To (The tutorial posted by Richard Lloyd)
[url]https://www.youtube.com/watch?v=AU8RyW82Z2M[/url]
Same symptoms using...Last edited by metalrise; 09-16-2018, 09:02 AM. -
Re: New Members - please post your introductions here
Hi everyone,
Just another new user trying to get some help for a bricked routerLeave a comment:
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